I want to learn French language from the person . . . . . . . is experienced. A. what B. which C. who D. all the three

The correct answer is C. who.

The question is asking for the person who is experienced in teaching French. The word “who” is used to refer to people. The words “what” and “which” are used to refer to things.

The following are some examples of how the word “who” can be used:

• I want to learn French from the person who is experienced.
• I want to meet the person who wrote that book.
• I want to talk to the person who is in charge.

The following are some examples of how the words “what” and “which” can be used:

• I want to learn French.
• I want to read that book.
• I want to talk to the person in charge.

In the context of the question, the word “who” is the most appropriate word to use.